Fixture stud and hook assembly



1955 A. APPLETON FIXTURE STUD AND HOOK ASSEMBLY Filed May 22, 1951 United States Patent 2,699,315 FIXTURE STUD AND HOOK ASSEMBLY Arthur I. Appleton, Northbrook, Ill. Application May 22, 1951, Serial No. 227,599 2 Claims. (Cl. 248-340) The present invention relates generally to electrical fittings and more specifically to a novel assembly for mounting an outlet box or the like on a bar hanger.

In installing bar hangers between the floor joists or studding of buildings under construction, it is customary to fix the box to the bar hanger beforehand. This is usually done by slipping the end of the bar hanger through some sort of suspension fitting which is capable of procertain degree of adjustment to orient the box in proper position after the bar hanger is installed in place. Such an arrangement is manifestly unsuitable for use with bar hangers having enlarged ends to facilitate mount is also undesirable due to the fact that the installer must support and handle the weight of the box and bar hanger combined rather than just the hanger alone.

e general aim of the present invention is to provide a means for attaching a box to a bar hanger so as to overas well as bodily adjustment along such Another object is to provide an assembly of the character set forth which g economical to manufacture and exceptionally easy to use.

Other objects and advantages will become apparent as the following detailed description proceeds, taken in connection with the accompanying drawing,

Figure l is a plan view of an installed bar hanger and an outlet box fixed thereto by means of an illustrative fixture stud and hook assembly embodying the present invention.

Fig. 2 is an enlarged fragmentary vertical sectional w through the bar hanger, box and novel assembly of Fig. 1, taken in the plane of the line 2--2.

Fig. 3 is another enlarged fragmentary vertical sectional view through the bar hanger, box and assembly of Fig. 1 but taken in the plane of the line 3-3.

Fig. 4 is a view similar to Fig. 3 but shows the box and the fixture stud and hook assembly in process of being attached to the bar hanger.

Fig. 5 is an enlarged perspective view detailing the stud member of the novel assembly of Fig. 1.

While the invention is susceptible of various modifications and alternative constructions, a preferred embodiment has been shown in the drawing and will be described herein in considerable detail. It should be understood, however, that there is no intention to limit the invention to the specific form disclosed. but on the contrary, the intention is to cover all modifications and alternative constructions falling within the spirit and scope of the invention as expressed in the appended claims.

Referring more particularly to the drawing, the invention is there exem lified in a novel fixture stud and hook assembly which attaches an outlet box 11 to a bar hanger 12. The latter has enlarged ends 14 which happen to be anchored to a pair of laterally spaced floor joists 15. The assembly 10 permits angular adjustment of the box 11 in a plane parallel to the longitudinal axis of the bar hanger 12 as well as bodily adjustment along such axis. In addition to serving as a means for clamping the box 11 to the hanger 12, the assembly 10 also serves as an anchorage for the supporting stem 16 of an electrical fixture associated with the box 11 (see Fig. 2).

For the purpose of engaging the bar hanger 12, the assembly 10 has a hook 18 of appropriate size to be inof the bar hanger and the free end of the hook finger 21 is extended a considerable distance toward the stem 22.

formed with a transverse relief groove 30 (see Fig. 4). Any weakening of the hook by the means of stiffener rib 31 on The box 11 and the assem- 10 can then be canted as shown in Fig. 4 and hooked ook aperture 28 so as to preclude disengagement of the hanger 12 therefrom (see Figs.

to the stud 26.

I claim as my invention:

1. A fixture stud and hook assembly for attaching an bar hanger, said assembly comprising the combination of a hook having a reversely bent finger defining a sertable through a knockout opening in the wall of the box a depending threaded on said stud for centering the same and said hook in the knockout opening of the box. a flange on said stud for engaging the marginal portions of the box wall surrounding the knockout opening and for forcing the box wall past the relief for obstructing said entrance to preclude disengagement chamfer so as to restrict the entrance of said hook aperof said hook from said bar hanger. ture and preclude withdrawal of the bar hanger therefronfi and meais ffor priventing getlrlograde movement of 5 References Cited in the file of this patent sai Xture stu a ter tig tening o t e same.

2. An assembly for mounting an outlet box or the like UNITED STATES PATENTS in depending relation with a bar hanger, said assembly 42,475 Harvey Apr. 26, 1864 comprising the combination of a hook having a shank 752,628 Miner Feb. 16, 1904 and an aperture therein defined by a reversely bent finger, 1,135,699 Knauber Apr. 13, 1915 a relief chamfer on the base portion of said hook opposite 10 1,155,805 Guth Oct. 5, 1915 said reversely bent finger comprising a cut away portion 1,332,690 Rosenfeld Mar. 2, 1920 providing an enlarged entrance to said hook aperture, the 1,505,580 Bronson Aug. 19, 1924 relief chamfer being spaced from the hook end to permit 1,552,204 Bowers Sept. 1, 1925 lateral entry of the bar hanger into the hook aperture, 1,617,184 Spott Feb. 8, 1927 and means adjustably attached to said hook for fastening 15 1,723,866 Knoderer Aug. 6, 1929 the hook to the outlet box and movable along said shank 2,538,468 North I an. 16, 1951 

